RADIO FREQUENCY (RF) SENSOR SYSTEM, AND METHOD FOR MANUFACTURING ELECTROMAGNETIC SENSOR ARRAY

PROBLEM TO BE SOLVED: To provide a radio frequency (RF) sensor system, in an embodiment, having a plurality of magnetoresistive (MR) sensors each of which includes a configuration of MR elements and is adapted to produce a time-varying output voltage in response to a time-varying external magnetic field. SOLUTION: The RF sensor system also includes combiner circuitry, electrically coupled to the plurality of MR sensors and adapted to receive and combine a plurality of time-varying output voltages from the plurality of MR sensors to generate a sensor output voltage. Another embodiment includes an electromagnetic sensor array having a plurality of MR sensors arranged in an array configuration, where each MR sensor includes a plurality of MR elements forming a Wheatstone bridge circuit, and where each MR sensor is adapted to produce a time-varying output voltage in response to a time-varying external magnetic field. Still another embodiment includes a method for manufacturing an electromagnetic sensor array. COPYRIGHT: (C)2009,JPO&INPIT